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Ask an expert advisor

You want power for your subs. But Kicker DX amplifiers give you something extra — clean power. Kicker's FIT™ — Fail-Safe Integration Technology — rejects noise from alternators, audio/video gear, and other car electronics for crisp, clean operation. An inexpensive optional adapter lets this amplifier accept output from factory radios too, so you can hook up the DX250.1 to almost any car.

Delivers up to 250 watts
The DX250.1 mono amp sends 250 watts RMS to your 2-ohm sub, or 140 watts to a 4-ohm sub. The built-in low-pass filter sends only the notes below 80 Hz to your sub, while the subsonic filter removes the super-low frequencies that your sub can't play. A bass boost lets you add some extra bump in your music, and you can add an optional remote bass boost for driver's seat control. You'll also find the set of preamp outputs handy for getting signal to another amp in your system.

Team this amp with Kicker subs and save
Take away the worry of picking the right subs. This Kicker bass package adds a pair of 12" Comp Kicker subs to the amp, while this bass package adds a single 12" Comp sub.

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Product Research

Features

CEA-2006 Compliant: CEA-2006 is a system of testing and
measurement methods for mobile audio amplifiers. This voluntary standard
advocates a uniform method for determining an amplifier's RMS power output and
signal-to-noise ratio. The criteria for measuring power uses a DC input voltage
of 14.4 volts and the RMS power output is measured over the full frequency range
of the amp with 1% or less Total Harmonic Distortion plus noise (THD+N).
Signal-to-Noise ratio is measured in weighted absolute decibels at a reference
of 1 watt. CEA-2006 allows consumers to compare car amplifiers and receivers on
equal footing. Measured under CEA-2006 conditions the Kicker DX250.1 is rated at
140 watts RMS x 1 channel into a 4-ohm load and the signal to noise ratio is 75
dB. Additional specs listed in the manual (but not listed as CEA-2006 compliant)
include 250 watts RMS x 1 channel into a 2-ohm load (measured using a 14.4 volt
power supply with no more than 1% THD+N) and 95 dB signal-to-noise ratio (measured
at the rated power output).

Kicker Livin' Loud Certified Power: The amplifier comes with
a certificate that indicates the total maximum wattage measured from the amplifier
in the box, along with the model number, serial number, test date, and whether
the amplifier passed the total harmonic distortion, signal-to-noise ratio, and
protection circuit tests.

Auto Turn-On: The Auto Turn-On switch offers three options:

+12 V: the amp turns on when +12
volts is applied to the remote terminal

DC Offset: the amp turns on when
a 6 volt surge is detected on the signal inputs (from
a speaker-level source)

Audio: the amp turns on when an
incoming audio signal is detected

Protection Circuitry: The DX250.1 has protection circuitry
that will turn the amp off in the event of overheating, over voltage (over 16 volt
input), under voltage (under 10 volt input), and short circuit (speaker output).
If the Protection LED on the left side of the amp illuminates red, the protection
circuit has engaged and the amp will not play until the problem is resolved.

Speaker-level Input: High-level inputs can be used when the
source device doesn't have preamp level outputs. The same RCA inputs on the amp
are used for either speaker-level or line-level connections. When a speaker-level
signal is used, a speaker wire to RCA adapter is needed (item number
20609ZiSL, sold separately) and the Input Level switch should be set to High.

Subsonic Filter: Frequencies that cannot be reproduced by the
subwoofer do not become sound, but unnecessary oscillations causing distortion;
these frequencies also waste amplifier power and can damage speakers. The subsonic
filter removes inaudible frequencies to improve the performance
of the speakers by eliminating this harmful distortion. The 24 dB/octave subsonic
filter's crossover point is 25 Hz.

Crossover: The internal low pass crossover is always active
(it cannot be bypassed). The crossover point is 80 Hz and the slope is 24 dB/octave.

Speaker Outputs: screw terminals;
accept spade connectors up to 0.32" wide; there are
terminals for two subwoofers, internally shorted together

Fuses: two 15-amp ATO fuses

Right Side of Amplifier:

RCA Inputs: one pair of gold-plated
RCA jacks, used for line level or speaker level inputs

RCA Outputs: one pair of gold-plated
RCA outputs; useful for adding another amp

Remote Bass: RJ-25 jack (phone type
plug) for use with the an optional ZXRC remote bass level
control

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to
find elsewhere. That's because we have our own in-house Product Research
team. They verify what’s in the box, check the owner's manual, and record
dimensions, features and specs. We stay on top of new products and technologies
to help people make informed choices.

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that you are over 18 years of age, that you own or have owned this product, and
that you are located within the United States or its territories. Please see our
Review Guidelines for more information. We reserve the right (but are not
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Kicker Mono Block 250.1

This kicker amp is great ! Small size and great for under your seat or in the trunk. Powerful for its size you can run a variety of speakers. 8"-10"-12"

Pros:Small, compact and powerful for the price. Easy to install with 4 screws and come with all the terminal connectors you need. High or Low inputs no converter needed. Multiple adjustments for tuning the amp.

Cons:Doesn't come with a remote on the base model. A must have for the best experience

great power for the price.

Excellent amp! Small frame and impressive power! I've been a Rockford Fosgate user all of my life. This is the first bon Fosgate base amp I've purchased and I would definitely buy it or its bigger brother again.

Very Happy!

I ordered this amp along with 2 Kicker 12s and am very happy with the results. I don't listen to too much bass heavy music, but wanted to add something so I can hear the full range and my music will stay clean at higher volumes. The result has exceeded my expectations.

Fat Sound

Written By john k, randolph NJ on Saturday, September 07, 2013

great amp. Used it to power a Kicker TC-10 box connected to subwoofer outlet of an Alpine 137BT. no instructions or manual but support emailed me the info. pretty easy to set-up.Only driving the subwoofer with it (the other four speakers are off the head for now) but it's in a jeep wrangler.Fat bass & extra punch. Does not work equally well in all 3 modes so my switch is all the way to the right. very happy with results.

Kicker 11DX250.1

Great amp for pushing subs in a mild system. I have two, one pushing a Kicker 10" and another pushing a JL 12". It's little light for the 12, but still does a great job. Works perfectly with a single 10.

Great little amp

Written By brian chevy malibu, kentucky on Thursday, July 25, 2013

I decided to upgrade the factory sound system in my car since I drive roughly an hour a day for the work commute. Put the pioneer app radio 3 and jl audio component speakers. Shopped around for the best price. This made a world of difference. After a few weeks I decided to get a sub and amp. I have little ones that ride with me all of the time that love music. So didn't want anything too loud. Im normally a jl audio believer but didn't want to shell out the money. I did a litle research and purchased a Polk audio 8" sub and box combo. Then I paired it with this amp. Really impressed with the dynamics of this system. Everyone that rides with me swears I have a much higher end system. The output is really impressive considering I only have my amp turned up a little under half way. I have under 200 invested in this set up and it moves the air and my kids always want to ride in my car over my truck or my wife's Avalon.I got this car to keep the miles off my beloved truck. Now I choose to take my malibu on about every trip. I am so impressed that I am going to purchase this same sub and amp combo for our Avalon as my wife is jealous. She has the jbl factory system with an open air sub. It sounds good but missing on the low end. This will he a great anniversary present.

Good Stuff

Bought on recommendation from Crutchfield advisor to match up with a single Kenwood shallow mount 150w 8" sub. It's been only 3 weeks but so far I am pleased with the matchup. This a simple amp, no xover settings (built in 80hz lp) just power gain and a bass boost option (great for some stuff, over powering for other) I may opt to get the remote bass control (not offered at Crutchfield?) for a little more control (I listen to a wide variety of music). I can see the potential, as other reviewers have said, for this thing to run warm. I have it under the driver seat, with ample air space beneath it and I believe this will work just fine. I am still dealing with overall fine tuning of the complete system but currently have the gain set to close to max and I am getting solid distortion free sound to the sub.

Kicker 11DX250.1

Beautiful sounding amp. Especially for the size and the price. For a struggling college student, this was definitely a good purchase and should last me well until I'm able to afford a more powerful system.

Pros:Low price. High Quality.

Cons:No filter adjustments and the gain control knob is sold separately. And honestly I wouldn't mind getting a decal with the amp. Just saying.

Its ight

It's pretty cheap which is good and pushes my 12'' kicker comp , but if you wanna upgrade to a heavier subwoofer then you would need more power. I like the bass boost knob and the low input setting, but the gain control needs to be adjusted with a screwdriver which is fine, but I like to adjust my bass while I am driving. This is an easy fix if you have the gain control remote, but that remote is sold sepratley.

OK, BUT......

This amp performs well for the money. The reason I gave it only 2 stars is that the instructions and manual suck. It is a mono Subwoofer amp and there is NO I REPEAT NO instructions on hooking it up to the sub. There are 2 channels on this amp like any other amp. I have no idea if I am losing power due to incomplete instructions. Let me be clear, I have been hooking up car stereos for over ten years, I know what I'm doing. But to have an amp that you pay good money for from a known brand, the least they could do is provide specific instructions on it.

Simple

Not a bad starter amp, very little controls besides gain and a bass boost. Its a simple mono amplifier with 250 watts of pushing power. I have it hooked up to a single sony explod 12" which seems to be a little bit too much for this little amp to handle, but it still does push it decently. Its probably best with a smaller 8"-10" bass tube or sub. I recommend this amp if you need a little extra "kick" in the low notes of your sound system, just don't expect to knock the mirrors off with this amp. It does however get VERY HOT if you leave it sitting on the carpet or an area with poor airflow. I got a couple 1X2 planks, painted them black to match my carpet and bolted the amp to that so there is an air gap under the amp, it stays much cooler now. I also had a hard time getting it to turn on using the other modes, it would only turn on using a REM wire hooked up to a 12V switched power source behind the head unit.

Pros:Build quality, price, simplicity

Cons:Power output, gets very hot if you don't give it a small gap of air to run under it, tempermental with the auto turn on, only worked with REM wire.

Great amp for my application

Installed this in my 91 Miata with 8 inch Kicker subwoofer and Clarion head unit. Much better sound then I anticipated. This was a parcel shelf installation with the amp mounted in the trunk. I previously replaced the factory speakers with little improvement. This current upgrade was much more impressive